Foundation brake-rigging.



T. L. BURTON. FOUNDATION BRAKEHHIGGING. APPLICATION FILED JUNE t, 1914.

Patented Dec. 28, 1915.

'lLHOfMAS l). BURTON, F PITTSBURGH, PENNSYLVANIA, ASSIGNOR '10 AMERICAN BRAKE COIWPAE'Y, OF ST} LOUIS. MISSOURI, A CORPORATION OF MISSOURI.

rooimarron BRAKE-RIGGING.

Specification of Letters Patent.

I Patented Ueofi, tell-5,

Application filed June 1, 191 1. i Serial No. 841,992.

' a citizen of the United States, and a resident of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented a certain new and useful Improvement in Foundation Brahe htigging, of Which-i111- provement the following is a specification.

This invention relates to foundation brake rigging tor pivoted railway trucks, and more particularly to the clasp type of brake in which brake shoes are applied to both sides of each pair of wheels, the object of any invention being to provideian improved brake construction otth1s type in which a brake hanger lever having a fixed fulcrum is provided for each brake head, the corre' sponding hanger levers on opposite sides of the truck. being connected by transverse brake beams which are operated by the truck levers.

lln the accompanying drawings: Figure 1 is a hall plan of one form ofclasp type brake rigging embodying my improvement; Fig. 2, a longitudinal sectional view of the same, showing one set of truck levers and rods in elevation; and Fig. 3, a view similar tov Fig. 1, but showing a modification in which the power is applied at the end of the truck.

According tothe construction shown in the drawing, my improvement is illustrated in connection with a six wheeled truck haXL/ ing brake heads, such as" 8 ,3 6 :99, 8*

and S, applied to both sides of each wheel, the heads being pivoted directly to the lower ends of the respective hanger leversl, '2, 3, 4, 5, and 6, on each side of the truck, and the hanger levers having fixed fulcrums at their upper ends. The corresponding hangers upon opposite sides of the truck are connected by the respective transverse brake beams, B B B B, B and B, which are. connected to said hanger levers at an intermediate point. For operating said brake beams, I provide one or two sets of truck levers and rods, preferably two sets, one on each side of the truck, the truck levers being pivotally connected at one end to said beams and connected to suitable pull rods at the opposite ends.

As shown in Figs. 1 and 2 of the drawings,

beams, the outer pairs of truck levers, 1, 2

and 5 6 being connected by the respective pull rods, 8 and 9, while the ends o't the truck levers, 2" and 3, are connected by r0d,'13, and the ends of levers, 4 and 5, by rod, 14. The live truck levers, 3 and 4, of the center pair of wheels are operated by the intermediate levers, 16 and-15, joined by rod, 7, and

connected to said truck levers by the respective links, 10 and 11. Where two similar sets of intermediate levers, truck levers and rod connections are provided, one on each side of the truck, both sets are actuated by the equalizer, 12 and the brake rod, 12, from the brake cylinder, as will be readily understood. W'ith this form of rigging, the braking stresses are transmitted from the intermediate levers at the center of the truck, through the connected rods, and truck levers, to the levers l and 6, which have fixed fulcrums at the ends of the truck.

In the modification shown in Fig 3, the power is applied to the rigging at the end of the truck by means of rod, 12, equalizer, 12 and attached links connected to the ends of the truck levers, 6, and in this case the live truck levers, 3 and 4c, of the center pair of wheels are directly connected by vmeans of the pull rod, 10?. With this construction ethe stresses are transmitted from the live end truck lever, 6, through the set of rods and leverp successively to the dead truck lever, 1, having the fixed fulcrumlat the the heads may be readily detached by'simply removing the pin for repfurs or renewals at any time without distur ing or disconnecting other parts of the rigging.

Having now described my invention, What I claim as new and desire ters Patent is:

1. In a brake rigging for railway trucks having a plurality of pairs of wheels, the combination of brake heads applied toboth sides of each pair of wheels, ha1nger lovers to secure by Letire sides of each pair of Wheels, hanger levers having fiXed-fulcrums at their upper ends and pivoted to said heads at their lower ends, transverse brake beams connecting corresponding hanger levers on opposite sides of the truck, and a set of connected truck levers and rods on each side of the truck for operating said brake beams.

3. In a brake rigging for railway trucks having a plurality of pairs of wheels, the combination of brake heads applied to both sides of each pair of wheels, hanger levers pivoted at their lower ends to the-brakev heads and having fixed iulcrums at the up per ends, transverse brake beams connecting corresponding hanger levers at their intermediate portions, and a horizontal system of truck levers and rods upon each side of the truck and in substantially the same plane with said brake beams for actuating the same.

In testimony whereof I have hereunto set my hand. Y

THOMAS L. BURTON, VltllQSsQS F. G. CRAIG, C. C. Zlncnnn. 

